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Freeze on a while

 
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G-nesh



Joined: 28 May 2008
Posts: 4
PostPosted: Wed May 28, 2008 9:41 am    Post subject: Freeze on a while Reply with quote
Hi guys,

I'm new to this forum, I've just started coding some little programs on my psp slim the cf is 3.90 m33, so the problem is that the psp freeze at a while(1) loop.

Code:

#include <pspdisplay.h>
#include <pspctrl.h>
#include <pspkernel.h>
#include <pspdebug.h>

PSP_MODULE_INFO("Hello World", 0, 1, 1);

#define printf pspDebugScreenPrintf

/* Exit callback */
int exit_callback(int arg1, int arg2, void *common) {
        sceKernelExitGame();
        return 0;
}

/* Callback thread */
int CallbackThread(SceSize args, void *argp) {
        int cbid;

        cbid = sceKernelCreateCallback("Exit Callback", exit_callback, NULL);
        sceKernelRegisterExitCallback(cbid);

        sceKernelSleepThreadCB();
        return 0;
}

/* Sets up the callback thread and returns its thread id */
int SetupCallbacks(void) {
        int thid = 0;

        thid = sceKernelCreateThread("update_thread", CallbackThread, 0x11, 0xFA0, 0, 0);
        if(thid >= 0) {
                sceKernelStartThread(thid, 0, 0);
        }

        return thid;
}

int main() {
        pspDebugScreenInit();
        SetupCallbacks();

        int counter = 0;
        int i = 0;
        int c = 0;
        SceCtrlData pad;


        printf("Press [X] To Start the Timer\n");
// Freeze...
        while(1) {
                if(pad.Buttons & PSP_CTRL_CROSS) {
                break;
                }
        }

        while(1) {
                sceCtrlReadBufferPositive(&pad, 1);
                if(pad.Buttons & PSP_CTRL_CIRCLE) {
                        break;
                }
                pspDebugScreenClear();

                printf("Press [O] To Stop the Timer\n");
                printf("Counter: %i", counter);

                counter++;

                for(i=0; i<5; i++) {
                        sceDisplayWaitVblankStart();
                }


        }

        pspDebugScreenClear();
        printf("Counter Finished.");
        printf("Final Count: %i", counter);

        sceKernelSleepThread();

        return 0;
}


I've used a tutorial and just pasted the code, I've tried to understand why it freeze but I can't find a valid answer.

If someone could help it will be really appreciated!
Thanks in advance, and hi to everybody! :D
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Crux



Joined: 25 May 2008
Posts: 10
PostPosted: Wed May 28, 2008 9:48 am    Post subject: Reply with quote
Put this in the while:

sceCtrlReadBufferPositive(&pad, 1);

What it does is stores the current button pressed in the pad variable. Its not storing anything while its looping, so therefor it will never break the loop.

EDIT: make sure its outside the if statement as well
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G-nesh



Joined: 28 May 2008
Posts: 4
PostPosted: Wed May 28, 2008 10:02 am    Post subject: Reply with quote
Thank you Crux!

Hehe I feel so dumb, when I've seen your answer I just go back to the tutorial and... I missed that row...

I'm sorry for the dumb post :)
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